A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 2925-01-288-2091
NSN 6240-00-166-2271
NSN 5965-01-575-6067
NSN 4140-01-325-1436
NSN 5930-01-241-8670
NSN 5998-01-617-9384
NSN 6145-01-168-0948
NSN 6150-01-055-6068
NSN 6685-01-572-6374
NSN 5990-00-947-6879
NSN 5855-00-821-7512
NSN 5950-01-117-5639